There are many types of killers and good reasons to fear them all. Some kill as the result of an obsession, some kill for revenge, others seem to have no motive at all. One of the most disturbing...

There are many types of killers and good reasons to fear them all. Some kill as the result of an obsession, some kill for revenge, others seem to have no motive at all. One of the most disturbing types of serial murderers is the angel of death, a healthcare worker who uses their medical knowledge and access to patients to carry out a murder spree. Believe it or not, just such a case happened in Lufkin, Texas only a few years ago. Tune in to this episode to find out how one woman in a small East Texas town held her patients and coworkers in the grip of fear as she wielded the power of life and death before their very eyes.